Answer : How much your parents earned.
There’s about a .5 “intergenerational earnings correlation” in the U.S.
That means, look at how much your folks earned and you have a good idea re: how much you’ll be earning.
Causation, or just correlation ?
Well, there’s a causal variable in there.
Children of high earning parents tend to get better educations … much better educations.
Reported by the New America Foundation
The Homa Files 
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